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Toxicity of fluoroquinolone antibiotics to aquatic organisms

Robinson, April A., Belden, Jason B., Lydy, Michael J.·2005·Environmental Toxicology and Chemistry

Abstract

Toxicity tests were performed with seven fluoroquinolone antibiotics, ciprofloxacin, lomefloxacin, ofloxacin, levofloxacin, clinafloxacin, enrofloxacin, and flumequine, on five aquatic organisms. Overall toxicity values ranged from 7.9 to 23,000 μg/L. The cyanobacterium Microcystis aeruginosa was the most sensitive organism (5-d growth and reproduction, effective concentrations [EC50s] ranging from 7.9 to 1,960 μg/L and a median of 49 μg/L), followed by duckweed (Lemna minor, 7-d reproduction, EC50 values ranged from 53 to 2,470 μg/L with a median of 106 μg/L) and the green alga Pseudokirchneriella subcapitata (3-d growth and reproduction, EC50 values ranged from 1,100 to 22,700 μg/L with a median 7,400 μg/L). Results from tests with the crustacean Daphnia magna (48-h survival) and fathead minnow (Pimephales promelas, 7-d early life stage survival and growth) showed limited toxicity with no-observed-effect concentrations at or near 10 mg/L. Fish dry weights obtained in the ciprofloxacin, levofloxacin, and ofloxacin treatments (10 mg/L) were significantly higher than in control fish. The hazard of adverse effects occurring to the tested organisms in the environment was quantified by using hazard quotients. An estimated environmental concentration of 1 μg/L was chosen based on measured environmental concentrations previously reported in surface water; at this level, only M. aeruginosa may be at risk in surface water. However, the selective toxicity of these compounds may have implications for aquatic community structure.

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Metadata

Authors
Robinson, A. A., Belden, J. B., & Lydy, M. J.
Venue
Environmental Toxicology and Chemistry
Published
2005-02-01
Volume
24
Issue
2
Pages
423-430
ISSN
  • 0730-7268 (ISSN-L)
  • 1552-8618
OpenAlex
W2063483776
Cited by
512
References
24
FWCI
8.19
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Toxicity of fluoroquinolone antibiotics to aquatic organisms. https://app.cochat.ai/papers/10.1897/04-210r.1
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Robinson, A. A., Belden, J. B., & Lydy, M. J. (2005). Toxicity of fluoroquinolone antibiotics to aquatic organisms. Environmental Toxicology and Chemistry. https://doi.org/10.1897/04-210r.1

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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